Record envelope, standing records and threshold days for Shelburne Falls (USC00197370), Massachusetts, United States, with 48 years of record.
Key Facts for Shelburne Falls
Shelburne Falls (USC00197370) is a weather station in Massachusetts, United States at 42.62 latitude and -72.73 longitude, 137 m (449 ft) above sea level.
The station reports from 1930 to 1977, 48 years of record.
1,464 records set at Shelburne Falls still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Shelburne Falls set a daily record high maximum temperature of 32.8 C (91.0 F) on 23 May 1977.
About the Station
Location: Massachusetts, United States, 42.62 latitude, -72.73 longitude.
Elevation: 137 m (449 ft).
Period of record: 1930 to 1977, 48 years.
Eligible elements: tmax, tmin, prcp, snow.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Shelburne Falls. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Shelburne Falls, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
19.4 C (66.9 F)
-30.6 C (-23.1 F)
n/a
n/a
Feb
17.8 C (64.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-26.1 C (-15.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-11.7 C (10.9 F)
n/a
n/a
May
34.4 C (93.9 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
0.6 C (33.1 F)
n/a
n/a
Jul
36.7 C (98.1 F)
4.4 C (39.9 F)
n/a
n/a
Aug
37.8 C (100.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
26.1 C (79.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Shelburne Falls still stand. 1933 holds the most, with 50.
Standing records at Shelburne Falls by the year they were set
Year set
Standing records
1930
13
1931
46
1932
31
1933
50
1934
38
1935
24
1936
49
1937
25
1938
37
1939
23
1940
33
1941
18
1942
30
1943
47
1944
21
1945
42
1946
38
1947
31
1948
38
1949
34
1950
31
1951
29
1952
18
1953
32
1954
35
1955
30
1956
39
1957
41
1958
23
1959
34
1960
15
1961
33
1962
23
1963
31
1964
37
1965
34
1966
20
1967
35
1968
41
1969
18
1970
22
1971
24
1972
22
1973
30
1974
24
1975
20
1976
36
1977
19
Wettest Day of Each Month
Oct: 110.2 mm (4.3 in)
The wettest day on record for each calendar month at Shelburne Falls. The most was 110.2 mm (4.3 in) on 15 October 1955.
Record daily precipitation for each month at Shelburne Falls
Month
Record daily precipitation (mm)
Date
Jan
49.0 mm (1.9 in)
1 January 1949
Feb
78.7 mm (3.1 in)
8 February 1941
Mar
70.1 mm (2.8 in)
19 March 1936
Apr
73.7 mm (2.9 in)
23 April 1969
May
93.0 mm (3.7 in)
15 May 1937
Jun
109.7 mm (4.3 in)
18 June 1967
Jul
78.0 mm (3.1 in)
29 July 1969
Aug
102.4 mm (4.0 in)
19 August 1955
Sep
88.6 mm (3.5 in)
13 September 1960
Oct
110.2 mm (4.3 in)
15 October 1955
Nov
109.0 mm (4.3 in)
14 November 1937
Dec
76.7 mm (3.0 in)
31 December 1948
Period of Record Coverage
1930 to 1977
Complete yearUnder 90 percent of days
48 years of record at Shelburne Falls, 1930 to 1977. 3 years have data for under 90 percent of days and are left out of rankings: 1930, 1935, 1977.
Cooler than the station meanWarmer than the station mean
One stripe for each of 45 complete years at Shelburne Falls, 1931 to 1976. Blue stripes are years cooler than the station's own mean of 7.8 C (46.0 F); red stripes are warmer. The coolest year was 1943, at 6.5 C (43.6 F), and the warmest was 1931, at 9.6 C (49.2 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Shelburne Falls as warming stripes, 1931 to 1976
Year
Annual mean temperature
Difference from the station mean
1931
9.6 C
+1.76 C
1932
9.0 C
+1.20 C
1933
9.2 C
+1.44 C
1934
8.4 C
+0.61 C
1935
8.4 C
+0.55 C
1936
8.4 C
+0.63 C
1937
8.4 C
+0.61 C
1938
8.7 C
+0.87 C
1939
8.2 C
+0.41 C
1940
6.7 C
-1.08 C
1942
7.9 C
+0.09 C
1943
6.5 C
-1.34 C
1944
7.3 C
-0.50 C
1945
7.8 C
-0.02 C
1946
8.0 C
+0.22 C
1947
7.4 C
-0.37 C
1948
7.4 C
-0.41 C
1949
9.1 C
+1.31 C
1950
7.4 C
-0.39 C
1951
7.5 C
-0.28 C
1952
8.2 C
+0.36 C
1953
8.9 C
+1.09 C
1954
7.7 C
-0.13 C
1955
7.8 C
-0.04 C
1956
6.9 C
-0.91 C
1957
8.1 C
+0.27 C
1958
6.6 C
-1.21 C
1959
7.7 C
-0.08 C
1960
7.2 C
-0.60 C
1961
7.5 C
-0.28 C
1962
6.7 C
-1.09 C
1963
7.3 C
-0.55 C
1964
7.5 C
-0.26 C
1965
7.3 C
-0.50 C
1966
7.6 C
-0.25 C
1967
7.2 C
-0.60 C
1968
7.6 C
-0.22 C
1969
7.7 C
-0.10 C
1970
7.5 C
-0.27 C
1971
7.5 C
-0.30 C
1972
6.8 C
-0.96 C
1973
8.9 C
+1.06 C
1974
7.9 C
+0.09 C
1975
8.2 C
+0.44 C
1976
7.4 C
-0.44 C
The annual mean temperature here has fallen by 0.2 C (0.1 to 0.4) per decade over 1931 to 1976. In Fahrenheit: 0.4 F (0.1 to 0.7) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Shelburne Falls
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.2 C (-0.4 to -0.1) per decade
-0.4 F (-0.7 to -0.1) per decade
1931 to 1976
45
Fall
Mean daily maximum
-0.3 C (-0.5 to -0.1) per decade
-0.5 F (-0.9 to -0.2) per decade
1931 to 1976
45
Fall
Mean daily minimum
-0.17 C (-0.33 to -0.01) per decade
-0.30 F (-0.59 to -0.02) per decade
1931 to 1976
45
Fall
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1930 to 1977
Yearly extremes at Shelburne Falls: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1933
35.0 C (95.0 F)
48
Coldest night (TNn)
-32.2 C (-26.0 F)
1943
-24.4 C (-11.9 F)
48
Wettest day (Rx1day)
110.2 mm (4.3 in)
1955
64.9 mm (2.6 in)
48
Wettest five days (Rx5day)
255.8 mm (10.1 in)
1955
94.1 mm (3.7 in)
48
Longest dry spell (CDD)
31 days
1957
17 days
48
Hottest day (TXx)
The hottest day of the year at Shelburne Falls, 1930 to 1977. The record is 37.8 C (100.0 F) in 1933, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Shelburne Falls by year
Year
Hottest day (TXx)
1930
34.4 C (93.9 F)
1931
35.6 C (96.1 F)
1932
33.9 C (93.0 F)
1933
37.8 C (100.0 F)
1934
35.0 C (95.0 F)
1935
35.0 C (95.0 F)
1936
33.9 C (93.0 F)
1937
36.7 C (98.1 F)
1938
36.7 C (98.1 F)
1939
35.0 C (95.0 F)
1940
35.0 C (95.0 F)
1941
34.4 C (93.9 F)
1942
34.4 C (93.9 F)
1943
35.0 C (95.0 F)
1944
37.8 C (100.0 F)
1945
34.4 C (93.9 F)
1946
36.7 C (98.1 F)
1947
34.4 C (93.9 F)
1948
37.8 C (100.0 F)
1949
36.1 C (97.0 F)
1950
32.8 C (91.0 F)
1951
31.1 C (88.0 F)
1952
37.8 C (100.0 F)
1953
36.7 C (98.1 F)
1954
33.9 C (93.0 F)
1955
35.6 C (96.1 F)
1956
33.3 C (91.9 F)
1957
37.2 C (99.0 F)
1958
35.6 C (96.1 F)
1959
34.4 C (93.9 F)
1960
32.2 C (90.0 F)
1961
33.3 C (91.9 F)
1962
34.4 C (93.9 F)
1963
36.1 C (97.0 F)
1964
35.0 C (95.0 F)
1965
35.0 C (95.0 F)
1966
35.6 C (96.1 F)
1967
34.4 C (93.9 F)
1968
34.4 C (93.9 F)
1969
33.9 C (93.0 F)
1970
34.4 C (93.9 F)
1971
34.4 C (93.9 F)
1972
33.9 C (93.0 F)
1973
35.6 C (96.1 F)
1974
35.0 C (95.0 F)
1975
37.2 C (99.0 F)
1976
33.9 C (93.0 F)
1977
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Shelburne Falls, 1930 to 1977. The record is -32.2 C (-26.0 F) in 1943, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at Shelburne Falls by year
Year
Coldest night (TNn)
1930
-17.8 C (0.0 F)
1931
-26.1 C (-15.0 F)
1932
-25.6 C (-14.1 F)
1933
-26.7 C (-16.1 F)
1934
-31.1 C (-24.0 F)
1935
-28.3 C (-18.9 F)
1936
-27.8 C (-18.0 F)
1937
-20.0 C (-4.0 F)
1938
-27.2 C (-17.0 F)
1939
-23.9 C (-11.0 F)
1940
-24.4 C (-11.9 F)
1941
-19.4 C (-2.9 F)
1942
-27.2 C (-17.0 F)
1943
-32.2 C (-26.0 F)
1944
-23.3 C (-9.9 F)
1945
-23.3 C (-9.9 F)
1946
-23.9 C (-11.0 F)
1947
-22.2 C (-8.0 F)
1948
-28.9 C (-20.0 F)
1949
-21.7 C (-7.1 F)
1950
-26.1 C (-15.0 F)
1951
-26.1 C (-15.0 F)
1952
-22.8 C (-9.0 F)
1953
-16.1 C (3.0 F)
1954
-24.4 C (-11.9 F)
1955
-23.3 C (-9.9 F)
1956
-21.1 C (-6.0 F)
1957
-30.6 C (-23.1 F)
1958
-23.9 C (-11.0 F)
1959
-22.8 C (-9.0 F)
1960
-23.9 C (-11.0 F)
1961
-28.3 C (-18.9 F)
1962
-24.4 C (-11.9 F)
1963
-26.7 C (-16.1 F)
1964
-23.3 C (-9.9 F)
1965
-23.3 C (-9.9 F)
1966
-25.0 C (-13.0 F)
1967
-24.4 C (-11.9 F)
1968
-30.0 C (-22.0 F)
1969
-24.4 C (-11.9 F)
1970
-24.4 C (-11.9 F)
1971
-29.4 C (-20.9 F)
1972
-23.3 C (-9.9 F)
1973
-21.7 C (-7.1 F)
1974
-23.3 C (-9.9 F)
1975
-23.3 C (-9.9 F)
1976
-28.3 C (-18.9 F)
1977
-26.1 C (-15.0 F)
Wettest day (Rx1day)
The wettest day of the year at Shelburne Falls, 1930 to 1977. The record is 110.2 mm (4.3 in) in 1955, marked on the chart; the median year is 64.9 mm (2.6 in).
Wettest day (Rx1day) at Shelburne Falls by year
Year
Wettest day (Rx1day)
1930
33.3 mm (1.3 in)
1931
62.5 mm (2.5 in)
1932
66.8 mm (2.6 in)
1933
70.9 mm (2.8 in)
1934
68.3 mm (2.7 in)
1935
56.1 mm (2.2 in)
1936
70.1 mm (2.8 in)
1937
109.0 mm (4.3 in)
1938
85.9 mm (3.4 in)
1939
38.6 mm (1.5 in)
1940
55.9 mm (2.2 in)
1941
78.7 mm (3.1 in)
1942
64.8 mm (2.6 in)
1943
91.2 mm (3.6 in)
1944
82.6 mm (3.3 in)
1945
72.6 mm (2.9 in)
1946
64.3 mm (2.5 in)
1947
77.7 mm (3.1 in)
1948
76.7 mm (3.0 in)
1949
49.0 mm (1.9 in)
1950
57.2 mm (2.3 in)
1951
59.9 mm (2.4 in)
1952
65.5 mm (2.6 in)
1953
44.7 mm (1.8 in)
1954
82.3 mm (3.2 in)
1955
110.2 mm (4.3 in)
1956
40.6 mm (1.6 in)
1957
38.9 mm (1.5 in)
1958
45.2 mm (1.8 in)
1959
51.3 mm (2.0 in)
1960
88.6 mm (3.5 in)
1961
36.1 mm (1.4 in)
1962
53.1 mm (2.1 in)
1963
42.4 mm (1.7 in)
1964
47.0 mm (1.9 in)
1965
61.5 mm (2.4 in)
1966
62.0 mm (2.4 in)
1967
109.7 mm (4.3 in)
1968
61.7 mm (2.4 in)
1969
80.3 mm (3.2 in)
1970
72.9 mm (2.9 in)
1971
69.3 mm (2.7 in)
1972
65.0 mm (2.6 in)
1973
75.4 mm (3.0 in)
1974
71.6 mm (2.8 in)
1975
54.9 mm (2.2 in)
1976
72.1 mm (2.8 in)
1977
49.0 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Shelburne Falls, 1930 to 1977. The record is 255.8 mm (10.1 in) in 1955, marked on the chart; the median year is 94.1 mm (3.7 in).
Wettest five days (Rx5day) at Shelburne Falls by year
Year
Wettest five days (Rx5day)
1930
74.7 mm (2.9 in)
1931
92.7 mm (3.6 in)
1932
98.9 mm (3.9 in)
1933
87.7 mm (3.5 in)
1934
82.3 mm (3.2 in)
1935
74.9 mm (2.9 in)
1936
132.1 mm (5.2 in)
1937
129.3 mm (5.1 in)
1938
236.4 mm (9.3 in)
1939
83.0 mm (3.3 in)
1940
62.8 mm (2.5 in)
1941
69.3 mm (2.7 in)
1942
109.7 mm (4.3 in)
1943
109.7 mm (4.3 in)
1944
126.5 mm (5.0 in)
1945
90.0 mm (3.5 in)
1946
82.8 mm (3.3 in)
1947
141.2 mm (5.6 in)
1948
100.8 mm (4.0 in)
1949
150.3 mm (5.9 in)
1950
80.6 mm (3.2 in)
1951
96.2 mm (3.8 in)
1952
94.7 mm (3.7 in)
1953
102.9 mm (4.1 in)
1954
120.9 mm (4.8 in)
1955
255.8 mm (10.1 in)
1956
62.9 mm (2.5 in)
1957
69.3 mm (2.7 in)
1958
57.4 mm (2.3 in)
1959
104.7 mm (4.1 in)
1960
137.7 mm (5.4 in)
1961
60.0 mm (2.4 in)
1962
85.4 mm (3.4 in)
1963
68.6 mm (2.7 in)
1964
60.2 mm (2.4 in)
1965
89.9 mm (3.5 in)
1966
73.0 mm (2.9 in)
1967
142.2 mm (5.6 in)
1968
82.1 mm (3.2 in)
1969
106.4 mm (4.2 in)
1970
89.2 mm (3.5 in)
1971
113.8 mm (4.5 in)
1972
97.5 mm (3.8 in)
1973
143.8 mm (5.7 in)
1974
93.4 mm (3.7 in)
1975
132.1 mm (5.2 in)
1976
120.4 mm (4.7 in)
1977
84.3 mm (3.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Shelburne Falls, 1930 to 1977. The record is 31 days in 1957, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Shelburne Falls by year
Year
Longest dry spell (CDD)
1930
17 days
1931
17 days
1932
14 days
1933
11 days
1934
14 days
1935
20 days
1936
14 days
1937
8 days
1938
16 days
1939
13 days
1940
12 days
1941
19 days
1942
19 days
1943
19 days
1944
18 days
1945
14 days
1946
19 days
1947
25 days
1948
14 days
1949
19 days
1950
14 days
1951
13 days
1952
21 days
1953
25 days
1954
13 days
1955
26 days
1956
18 days
1957
31 days
1958
20 days
1959
14 days
1960
17 days
1961
13 days
1962
12 days
1963
23 days
1964
20 days
1965
20 days
1966
19 days
1967
12 days
1968
26 days
1969
16 days
1970
14 days
1971
16 days
1972
16 days
1973
21 days
1974
13 days
1975
14 days
1976
17 days
1977
14 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
45 years with a frost
Across 45 years with a frost, the median last spring frost at Shelburne Falls falls on 13 May and the median first autumn frost on 30 September, which leaves a median of 138 days between them.
Fitted over all years, the growing season changes by -2.4 days per decade at this station.
Frost dates and growing season at Shelburne Falls
Measure
Median, all years
Earliest period
Recent period (1947 to 1976)
Recent against earliest
Fitted trend
Last spring frost
13 May
n/a
15 May
n/a
+1.3 days per decade
First autumn frost
30 September
n/a
28 September
n/a
-1.1 days per decade
Growing days
138 days
n/a
137 days
n/a
-2.4 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
44 years, 1931 to 1976
A day with at least 64.8 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 115.7 mm (4.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Shelburne Falls: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
64.8 mm (2.6 in)
5 years
81.4 mm (3.2 in)
10 years
91.1 mm (3.6 in)
25 years
102.0 mm (4.0 in)
50 years
109.2 mm (4.3 in)
Longer than the 44 years of record
100 years
115.7 mm (4.6 in)
Longer than the 44 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 44 years of values from 1931 to 1976.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 110.2 mm (4.3 in) in 1955; 109.7 mm (4.3 in) in 1967; 109.0 mm (4.3 in) in 1937.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Shelburne Falls, at 1942. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1942 ran 0.4 C (0.7 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Shelburne Falls, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1942
-0.4
-0.7
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Shelburne Falls standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Shelburne Falls threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.